Bivalve populations are prone to change due sudden or gradual alteration in the natural environment and anthropogenic interference. Fisheries environmental managers therefore interested long-term trends disentangling human influences, assisting them conservation efforts management of bivalve stocks. Here, 64 monitoring reports covering a 50-year period from 1958 2009 cockles Cerastoderma edule ...

Benthic macrofauna are a key component of intertidal ecosystems. Their mobility and behavior determine processes like nutrient cycling the biogeomorphic development flats. Many physical drivers benthic behavior, such as sediment grain size, have been well-studied. However, little is known about how bulk density (a measure compaction water content) affects this behavior. We investigated effect o...

Thresholds occur, and play an important role, in the dynamics of many biological communities. In this paper, we model a persistence type threshold which has been shown experimentally to exist in hyperparasitised flukes in the cockle, a shellfish. Our model consists of a periodically driven slow-fast host-parasite system of equations for a slow flukes population (host) and a fast Unikaryon hyper...